1. Volume 114, Issue 2, Pages 305-310 (February 1998)
Use of macroaggregated albumin lung perfusion scan to diagnose hepatopulmonary syndrome: A new approach 
Gary A. Abrams, Navin C. Nanda, Eva V. Dubovsky, Michael J. Krowka, Michael B. Fallon 
Gastroenterology 
Volume 114, Issue 2, Pages (February 1998)
DOI: /S (98)
Copyright © 1998 American Gastroenterological Association Terms and Conditions

2. Fig. 1
(A) A normal MAA shunt fraction (2%) with regions of interest drawn around the posterior lungs and cerebrum. (B) An abnormal MAA shunt fraction (50%) showing radioactivity in the cerebrum. The range of radioactive intensity is low (red), moderate (yellow), and high (white).
Gastroenterology  , DOI: ( /S (98) )
Copyright © 1998 American Gastroenterological Association Terms and Conditions

3. Fig. 2
The long line represents a normal shunt fraction value of ≤6%; short lines are mean values. P < for patients with HPS compared with cirrhotic patients without HPS and hypoxemic subjects with intrinsic lung disease as determined by Kruskal–Wallis nonparametric analysis of variance. CE, contrast echocardiogram.
Gastroenterology  , DOI: ( /S (98) )
Copyright © 1998 American Gastroenterological Association Terms and Conditions

4. Fig. 3
Correlation of the MAA shunt fraction with (A) room air arterial oxygenation, (B) alveolar-arterial gradient, and (C) arterial PO2 while breathing 100% oxygen in 25 patients with HPS.
Gastroenterology  , DOI: ( /S (98) )
Copyright © 1998 American Gastroenterological Association Terms and Conditions

5. Fig. 4 Diagnostic approach to HPS.
Gastroenterology  , DOI: ( /S (98) )
Copyright © 1998 American Gastroenterological Association Terms and Conditions